The following numbers are not perfect squares. Give reason,

**(i)** 1057

**(ii)** 23453

**(iii)** 7928

**(iv)** 222222

**(v)** 64000

**(vi)** 89722

**(vii)** 222000

**(viii)** 505050

A number that ends either with 2, 3, 7 or 8 cannot be a perfect square. Also, a number that ends with odd number of zero(s) cannot be a perfect square.

**(i)** Since the given number 1057 ends with 7, so it cannot be a perfect square.

**(ii)** Since the given number 23453 ends with 3, so it cannot be a perfect square.

**(iii)** Since the given number 7928 ends with 8, so it cannot be a perfect square.

**(iv)** Since the given number 222222 ends with 2, so it cannot be a perfect square.

**(v)** Since the number 64000 ends in an odd number of zeros, so it cannot be a perfect square.

**(vi)** Since the number 89722 ends in 2, so it cannot be a perfect square.

**(vii)** Since the number 222000 ends in an odd number of zeros, so it cannot be a perfect square.

**(viii)** Since the number 505050 ends in an odd number of zeros, so it cannot be a perfect square.